'use strict';

const Controller = require('egg').Controller;

class HomeController extends Controller {
  async index() {
    this.ctx.body = 'api hi';
  }

  async getArticleList(){
    let sql = 'SELECT article.id as id,'+
              'article.title as title,'+
              'article.introduce as introduce,'+
              "FROM_UNIXTIME(article.addTime,'%Y-%m-%d %H:%i:%s' ) as addTime,"+
              'article.view_count as view_count ,'+
              '.type.typeName as typeName '+
              'FROM article LEFT JOIN type ON article.type_id = type.Id'
        const results = await this.app.mysql.query(sql)
        this.ctx.body={data:results}
  }

  async getArticleById(){
    //先配置路由的动态传值，然后再接收值
    let id = this.ctx.params.id

    let sql = 'SELECT article.id as id,'+
    'article.title as title,'+
    'article.introduce as introduce,'+
    'article.article_content as article_content,'+
    "FROM_UNIXTIME(article.addTime,'%Y-%m-%d %H:%i:%s' ) as addTime,"+
    'article.view_count as view_count ,'+
    'type.typeName as typeName ,'+
    'type.id as typeId '+
    'FROM article LEFT JOIN type ON article.type_id = type.Id '+
    'WHERE article.id='+id

    const result = await this.app.mysql.query(sql)

    this.ctx.body={data:result}
  }

  // 得到类别名称和编号
   
  async getTypeInfo(){
    const result = await this.app.mysql.select('type')
    this.ctx.body = {data:result}
  }

 //根据类别ID获得文章列表
  async getListById(){
    let id = this.ctx.params.id
    let sql = 'SELECT article.id as id,'+
    'article.title as title,'+
    'article.introduce as introduce,'+
    "FROM_UNIXTIME(article.addTime,'%Y-%m-%d %H:%i:%s' ) as addTime,"+
    'article.view_count as view_count ,'+
    'type.typeName as typeName '+
    'FROM article LEFT JOIN type ON article.type_id = type.Id '+
    'WHERE type_id='+id
    const result = await this.app.mysql.query(sql)
    this.ctx.body={data:result}

  }

}

module.exports = HomeController;
